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 I: The standard abbreviation for investment expenditures by the business sector, especially when used in the study of macroeconomics. This abbreviation is most often seen in the aggregate expenditure equation, AE = C + I + G + (X - M), where C, G, and (X - M) represent expenditures by the other three macroeconomic sectors, household, business, and foreign.
 Most Viewed (Number) production stages (106)limited resources (46)foreign sector (39)total variable cost curve (36)45-degree line (33) Visit the WEB*pedia

 Lesson Contents Unit 1: Price Taker A Perfect Market Characteristics Revenue Profit Maximization Unit 1 Summary Unit 2: Short-Run Output The Revenue Side The Revenue Numbers The Cost Side Comparing Totals Comparing Marginals Unit 2 Summary Unit 3: Doing Graphs Total Curves Profit Curve Marginal Curves Dividing Revenue Short-Run Alternatives Short-Run Supply Unit 3 Summary Unit 4: Long-Run Equilibrium Long-Run Marginal Cost Adjustment Entry And Exit Equilibrium Conditions Long-Run Supply Unit 4 Summary Unit 5: Evaluation The Good The Bad Market Control Unit 5 Summary Course Home
Perfect Competition

• The first unit of this lesson, Price Taker, begins this study with a look at the general structure of a perfectly competitive market.
• In the second unit, Short-Run Output, we take a look at the short-run production decision faced by a perfectly competitive firm based on the cost and revenue numbers.
• The third unit, Doing Graphs, then looks at the short-run production decision faced by a perfectly competitive firm using a graphical analysis of cost and revenue.
• In the fourth unit, Long-Run Equilibrium, we examine the nature of long-run adjustment by a perfectly competition industry when all inputs are variable.
• The fifth and final unit, Evaluation, then closes this lesson by considering the pros and cons of a perfectly competitive industry.

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CONSUMER DEMAND THEORY

The branch of economics devoted to the study of consumer behavior, especially as it applies to decisions related to purchasing goods and services through markets. Consumer demand theory is largely centered on the study and analysis of the utility generated from the satisfaction of wants and needs. The key principle of consumer demand theory is the law of diminishing marginal utility, which offers an explanation for the law of demand and the negative slope of the demand curve.

 BROWN PRAGMATOX[What's This?] Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors trying to buy either a remote controlled sports car with an air spoiler or semi-gloss photo paper that works with your neighbor's printer. Be on the lookout for gnomes hiding in cypress trees.Your Complete Scope
 North Carolina supplied all the domestic gold coined for currency by the U.S. Mint in Philadelphia until 1828.
 "My future starts when I wake up every morning . . . Every day I find something creative to do with my life. "-- Miles Davis, musician
 JIEJournal of Industrial Economics
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